EP0463318B1 - Schalterlose Orientierungshilfe zum Auffinden eines Schlüssellochs - Google Patents

Schalterlose Orientierungshilfe zum Auffinden eines Schlüssellochs Download PDF

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Publication number
EP0463318B1
EP0463318B1 EP19910106761 EP91106761A EP0463318B1 EP 0463318 B1 EP0463318 B1 EP 0463318B1 EP 19910106761 EP19910106761 EP 19910106761 EP 91106761 A EP91106761 A EP 91106761A EP 0463318 B1 EP0463318 B1 EP 0463318B1
Authority
EP
European Patent Office
Prior art keywords
key
current
switchless
lcled
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19910106761
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0463318A1 (de
Inventor
Rudolf Dipl.-Ing. Andres
Heinz Dipl.-Ing. Knoll
Volker Dipl.-Ing. Petri
Reinhold Dipl.-Ing. Mickeler
Harald Dipl.-Ing. Pfistner
Arno Dipl.-Ing. Jambor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Mercedes Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0463318A1 publication Critical patent/EP0463318A1/de
Application granted granted Critical
Publication of EP0463318B1 publication Critical patent/EP0463318B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/10—Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights

Definitions

  • the invention relates to a switchless orientation aid with the features of the preamble of claim 1.
  • a generic orientation aid is known (DE 30 35 892 A1), which has fluorescent surface elements arranged around a keyhole and thereby locating it in a dark environment, at least for those limited time afterglow of the surface elements allowed.
  • LC-LEDs low-current light-emitting diodes
  • LC-LEDs So-called low-current light-emitting diodes
  • these lamps are ideally suited for use in applications in which high luminous efficacy with minimal energy consumption is required. It can be seen from the characteristic curve fields attached to the specified specification that the lighting effect of the LC LED drops very sharply when the forward current is below the smallest specified working current.
  • the object of the invention is to improve the lighting duration of a generic switchless orientation aid.
  • LC-LED types e.g. HP Subminiature HLMP-Q150
  • their current consumption by a current limiter to a value below their specified working current to a voltage source, in particular to a Motor vehicle battery is connected, on the one hand, the load with the simplest means (elimination of switching devices and timing elements, etc.) is kept within permissible limits and, on the other hand, the task-based objective of extending the light duration is achieved.
  • the LC-LEDs have the advantage, of course, that they produce a light effect for almost any length of time when the battery is fully charged.
  • a further important protective measure against the discharge of a voltage source is implemented by selecting the number of LC LEDs connected in series in such a way that the total saturation voltage of the series circuit is relatively high. With a vehicle nominal voltage of 12 V z. B. said total saturation voltage is about 11 V. This dimensioning of the total voltage drop at the orientation aid will result in the on-board voltage falling below the selected value - which, for. B. can occur with a very long shutdown time and the lowest ambient temperatures - the saturation voltage of the series-connected LC-LED - which is around 1.5 V - below. These then become high-impedance and switch themselves off, so that the z. B. compared to the self-discharge of a conventional lead accumulator or the load of a clock negligible power consumption the orientation aid is completely zero without any switching or timing element.
  • a design of the orientation aid that is particularly inconspicuous in daylight can be achieved by arranging the LC LEDs on a ring-shaped matrix or a support and, after the electrical connections have been made, potting them with a transparent synthetic resin ring. As a result, a light ring is formed, which can include a key cylinder on the keyhole side.
  • Such an embodiment of an orientation aid is known from the already mentioned DE 31 36 889 C2, according to which an optical fiber ring is used, in which light is introduced at one point and over the circumference of which several steps acting as reflector surfaces are distributed, one of which enable uniform illumination of the entire ring.
  • Figure 1 is a motor vehicle door handle 1 with a broken drawn handle part 2 and a fixed Part 3, in which a lock cylinder 4 with a keyhole 5 is inserted.
  • the keyhole side of the locking cylinder 4 is encompassed in a manner known per se by a light ring 6, the part of which is visible from the outside consists of a transparent plastic ring 7.
  • Electrodes 9 spaced apart from one another, an ohmic resistor 10 and a connecting electrode 11 are applied to an annular, non-conductive carrier 8.
  • Each of the electrodes 9 carries a low-current light-emitting diode chip 12 with a double heterostructure, which in turn is connected electrically conductively to the respective electrode 9 on the anode side and is connected to the adjacent electrode via a thin (gold) wire 12 on the cathode side.
  • the LED chips 12 are therefore electrically connected in series with one another.
  • a line L + connects the resistor 10 on one side and directly, ie without an intermediate switch, with the positive pole of a voltage source U, for. B.
  • the resistor 10 is also connected to the adjacent electrode 9 via a thin wire 13, so that the LED chips 12 are also connected in series therewith with respect to the voltage source U.
  • the last LED chip 12 of the series circuit is connected on the cathode side to the connecting electrode 11, which in turn is connected directly to the negative pole of the voltage source U via a line L-.
  • the LED chips 12 and the resistor 10 are preferably made in a subminiature design. After the electrical connections have been made, the arrangement is cast with a transparent plastic in the form of a ring.
  • orientation aid can also be provided, e.g. B. two or more triangular surfaces to be pointed at the keyhole or ring sectors surrounding the keyhole as surface elements.
  • these designs are not the subject of the invention and are therefore not further shown.
  • the orientation aid is to be designed as an assembly part of the respective door lock with permanently connected lines and plugs, with a coding advantageously being provided on the plug in order to ensure the correct polarity of the diodes in the DC electrical system.
  • FIG. 2b illustrates the simple electrical connection of the components shown in FIG. 2a. In comparison to known electrically powered orientation aids, switches and timers are obviously missing here.
  • the resistor 10 serves as a current limiter and is dimensioned in accordance with the number of LED chips and any voltage peaks to be expected in the vehicle electrical system.
  • the number of light-emitting diode chips 12 and the resistance value of resistor 10 is chosen so that the saturation voltage of the series circuit or voltage divider formed by it is slightly below an on-board voltage that arises during normal operation of a motor vehicle, including longer parking times. With a normal lead accumulator as a voltage source, this value will be around 11 volts.
  • the known LC-LEDs with double heterostructure have a forward voltage of approximately 1.5 volts. With a 12-volt vehicle electrical system, it is therefore possible to operate up to 7 of these light-emitting diodes in series via a common series resistor with a total current of approximately 100 ⁇ A. Given this size, it will be possible to have several such light rings on a motor vehicle, e.g. B.
  • the total number of LC LEDs can be limited to seven - or six - so that two LC LEDs, e.g. B. one each in the triangular surface elements already mentioned are available, or a light ring with seven LC LEDs can be provided for each of these locking points.
  • the light-emitting diode chips 12 become high-resistance without further measures, i. H. they no longer consume electricity.

Landscapes

  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Electric Motors In General (AREA)
EP19910106761 1990-06-29 1991-04-26 Schalterlose Orientierungshilfe zum Auffinden eines Schlüssellochs Expired - Lifetime EP0463318B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904020865 DE4020865C1 (enExample) 1990-06-29 1990-06-29
DE4020865 1990-06-29

Publications (2)

Publication Number Publication Date
EP0463318A1 EP0463318A1 (de) 1992-01-02
EP0463318B1 true EP0463318B1 (de) 1994-08-17

Family

ID=6409417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910106761 Expired - Lifetime EP0463318B1 (de) 1990-06-29 1991-04-26 Schalterlose Orientierungshilfe zum Auffinden eines Schlüssellochs

Country Status (3)

Country Link
EP (1) EP0463318B1 (enExample)
DE (1) DE4020865C1 (enExample)
ES (1) ES2062603T3 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20001034U1 (de) 2000-01-21 2000-08-31 Rosas, Sieglinde, 86420 Diedorf Selbstleuchtende Schlüssellochmarkierung
DE10232894A1 (de) * 2002-07-19 2004-01-29 Bayerische Motoren Werke Ag Leuchte mit mindestens einer Leuchtdiode als Leuchtmittel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955075A (en) * 1974-10-15 1976-05-04 Joseph Susedik Doorknob illuminating device
US3916250A (en) * 1974-11-21 1975-10-28 Gen Motors Corp Door lock lighting system
DE3017096C2 (de) * 1980-05-03 1983-12-15 Daimler-Benz Ag, 7000 Stuttgart Türschloßbeleuchtung, insbesondere für Kraftwagen
DE3035892A1 (de) * 1980-09-24 1982-04-29 geb. Böttger Brigitte 5830 Schwelm Kertesz Floureszierende schluessellochmarkierung
DE3136889C2 (de) * 1981-09-17 1985-09-26 Daimler-Benz Ag, 7000 Stuttgart Beleuchtungseinrichtung für Bedienelemente wie Schalter oder Schlösser, insbesondere für Kraftfahrzeugschlösser
DE3508652A1 (de) * 1985-02-26 1986-08-28 Raymond François 8201 Schonstett Douw Beleuchtungsvorrichtung fuer schloesser aller art
US4745527A (en) * 1987-01-09 1988-05-17 Allison Corporation Illuminated door lock scratch guard
US4777570A (en) * 1987-02-05 1988-10-11 Glen Littles Illuminated doorknob lock

Also Published As

Publication number Publication date
ES2062603T3 (es) 1994-12-16
EP0463318A1 (de) 1992-01-02
DE4020865C1 (enExample) 1991-07-04

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